DuckCorp Dico

Found one definition

1.                 From WordNet (r) 3.0 (2006):
                   
   
   
                   
                     
   lip
       n 1: either of two fleshy folds of tissue that surround the
            mouth and play a role in speaking
       2: (botany) either of the two parts of a bilabiate corolla or
          calyx
       3: an impudent or insolent rejoinder; "don't give me any of your
          sass" [syn: sass, sassing, backtalk, back talk,
          lip, mouth]
       4: the top edge of a vessel or other container [syn: brim,
          rim, lip]
       5: either the outer margin or the inner margin of the aperture
          of a gastropod's shell